Microsoft is offering some free programming e-books.  They aren’t on VBA, but they will be useful to people who also program in other languages.  You can download sample chapters directly, but to get the entire contents of the books, you must sign-up for the Microsoft’s “Book Connection Newsletter.”

Introducing Microsoft SQL Server 2008

Learn about major new features in SQL Server 2008 including security, administration, and performance.

• Chapter 1: Security and Administration
• Chapter 2: Performance
• Chapter 3: Type System
• Chapter 4: Programmability
• Chapter 5: Storage
• Chapter 6: Enhancements for High Availability
• Chapter 7: Business Intelligence Enhancements

Visual Studio Related: LINQ, ASP,NET and Silverlight

There are three books available on this page:

• Programming Microsoft LINQ
• Programming Microsoft® ASP.NET 3.5
• Introducing Microsoft Silverlight 2